<?php
/**
 * ThinkSNS Widget类 抽象类
 * @author liuxiaoqing <liuxiaoqing@zhishisoft.com>,liu21st <liu21st@gmail.com>
 * @version TS3.0 only
 */
abstract class Widget {

	// 使用的模板引擎 每个Widget可以单独配置不受系统影响
	protected $template = '';
	protected $attr = array ();
	protected $cacheChecked = false;
	protected $mid;
	protected $uid;
	protected $user;
	protected $site;

	/**
	 * 渲染输出 render方法是Widget唯一的接口
	 * 使用字符串返回 不能有任何输出
	 * @access public
	 * @param mixed $data  要渲染的数据
	 * @return string
	 */
	abstract public function render($data);

	/**
	 * 架构函数,处理核心变量
	 * 使用字符串返回 不能有任何输出
	 * @access public
	 * @return void
	 */
	public function __construct(){

		//当前登录者uid
		$GLOBALS['ts']['mid'] = $this->mid =	intval($_SESSION['mid']);
		
		//当前访问对象的uid
		$GLOBALS['ts']['uid'] = $this->uid =	intval($_REQUEST['uid']==0?$this->mid:$_REQUEST['uid']);
		
		// 赋值当前访问者用户
		$GLOBALS['ts']['user'] = $this->user = model('User')->getUserInfo($this->mid);
		if($this->mid != $this->uid){
			$GLOBALS['ts']['_user'] = model('User')->getUserInfo($this->uid);
		}else{
			$GLOBALS['ts']['_user'] = $GLOBALS['ts']['user'];
		}
		
		//当前用户的所有已添加的应用
		$GLOBALS['ts']['_userApp']  = $userApp = model('UserApp')->getUserApp($this->uid);
		//当前用户的统计数据
		$GLOBALS['ts']['_userData'] = $userData = model('UserData')->getUserData($this->uid);
		
		$this->site = D('Xdata')->get('admin_Config:site');
		$this->site['logo'] = getSiteLogo($this->site['site_logo']);
		$GLOBALS['ts']['site'] = $this->site;

		//语言包判断
		if( TRUE_APPNAME != 'public' && APP_NAME != TRUE_APPNAME){
			addLang(TRUE_APPNAME);
		}
		Addons::hook('core_filter_init_widget');
	}

	/**
	 * 渲染模板输出 供render方法内部调用
	 * @access public
	 * @param string $templateFile  模板文件
	 * @param mixed $var  模板变量
	 * @param string $charset  模板编码
	 * @return string
	 */
	protected function renderFile($templateFile = '', $var = '', $charset = 'utf-8') {
		$var['ts'] = $GLOBALS['ts'];
		if (! file_exists_case ( $templateFile )) {
			// 自动定位模板文件
			// $name = substr ( get_class ( $this ), 0, - 6 );
			// $filename = empty ( $templateFile ) ? $name : $templateFile;
			// $templateFile =   'widget/' . $name . '/' . $filename . C ( 'TMPL_TEMPLATE_SUFFIX' );
			// if (! file_exists_case ( $templateFile ))
			throw_exception ( L ( '_WIDGET_TEMPLATE_NOT_EXIST_' ) . '[' . $templateFile . ']' );
		}
		
		$template = $this->template ? $this->template : strtolower ( C ( 'TMPL_ENGINE_TYPE' ) ? C ( 'TMPL_ENGINE_TYPE' ) : 'php' );

		$content = fetch($templateFile,$var,$charset);

		return $content;
	}
}
?>